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Moorabool ShirePopulation forecast

Bacchus Marsh

Population and age structure

Between 2019 and 2026, the age structure forecasts for Bacchus Marsh indicate a 38.1% increase in population under working age, a 22.7% increase in population of retirement age, and a 35.7% increase in population of working age.

Knowledge of how the age structure of the population is changing is essential for planning age-based facilities and services, such as child care, recreation and aged care.

The forecast age groups of Bacchus Marsh is a function of the current age of the population (people aging each year, being born and dying) as well as the age of people migrating into and out of the area. This in turn is driven by location (fringe, city centre, regional or rural) the existing housing stock (separate dwellings, medium or high density), the amount and type of new residential development (same as existing stock, or diversifying) and where the area is in a cycle of change. We call this the area’s residential role and function. You can learn more about this in the section household and suburb life cycles.

Forecast age structure - 5 year age groups
Bacchus Marsh - Total persons201920262041Change between 2019 and 2041
Age group (years)Number%Number%Number%Number
0 to 44706.27007.09216.8+451
5 to 94996.66686.69446.9+445
10 to 144816.46346.39116.7+430
15 to 193965.35745.78085.9+411
20 to 244496.05475.47225.3+273
25 to 295106.86806.88186.0+308
30 to 344926.57557.59426.9+451
35 to 394926.57887.81,0647.8+572
40 to 444335.86756.71,0347.6+601
45 to 494465.95505.58996.6+453
50 to 544516.05335.37895.8+338
55 to 594355.85345.36775.0+242
60 to 644435.95365.36344.7+190
65 to 694516.05315.36364.7+185
70 to 744205.64784.85894.3+169
75 to 793204.34174.25223.8+202
80 to 841622.12552.53842.8+223
85 and over1772.31962.03332.4+156
Total persons7,525100.010,052100.013,628100.0+6,102
Population and household forecasts, 2016 to 2041, prepared by .id (informed decisions), November 2019.

Key findings

In 2019, the dominant age structure for persons in Bacchus Marsh was ages 25 to 29, which accounted for 6.8% of the total persons.

The largest increase in persons between 2019 and 2026 is forecast to be in ages 35 to 39, which is expected to increase by 295 and account for 7.8% of the total persons.

The largest 5 year age group in 2026 is 35 to 39 years, with a total of 788 persons.

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